[D8902AAP], Letter from Joseph Hutchinson to Arthur Edwin Kennelly, October 11th, 1889
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Title
[D8902AAP], Letter from Joseph Hutchinson to Arthur Edwin Kennelly, October 11th, 1889
Editor's Notes
Re your favor of the 10th last re the percentage of mercury in meter plates, knowing a little about it, it suggests itself to me that possibly the variation in the percentage of mercury might work some change on the constant on which bills are made up. This is probably not so, or you would have mentioned it. Please advise me, however, for we are today writing the Edison Manuf. Co to make all plates that are made hereafter with three per cent of mercury instead of five. This is done without consideration with the Standardizing Bureau as we understand that it no longer exists.
Author
Recipient
Mentioned
Date
1889-10-11
Type
Folder/Volume ID
D8902-F
Microfilm ID
125:53
Document ID
D8902AAP
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University